diff options
Diffstat (limited to 'drivers/mtd/devices')
| -rw-r--r-- | drivers/mtd/devices/block2mtd.c | 20 | ||||
| -rw-r--r-- | drivers/mtd/devices/docecc.c | 1 | ||||
| -rw-r--r-- | drivers/mtd/devices/ms02-nv.c | 8 | ||||
| -rw-r--r-- | drivers/mtd/devices/mtdram.c | 265 | ||||
| -rw-r--r-- | drivers/mtd/devices/phram.c | 34 | ||||
| -rw-r--r-- | drivers/mtd/devices/slram.c | 23 |
6 files changed, 152 insertions, 199 deletions
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c index cfe6ccf0797..4a7a805e756 100644 --- a/drivers/mtd/devices/block2mtd.c +++ b/drivers/mtd/devices/block2mtd.c @@ -1,10 +1,9 @@ /* - * $Id: block2mtd.c,v 1.23 2005/01/05 17:05:46 dwmw2 Exp $ + * $Id: block2mtd.c,v 1.28 2005/03/19 22:40:44 gleixner Exp $ * * block2mtd.c - create an mtd from a block device * * Copyright (C) 2001,2002 Simon Evans <spse@secret.org.uk> - * Copyright (C) 2004 Gareth Bult <Gareth@Encryptec.net> * Copyright (C) 2004,2005 Jörn Engel <joern@wh.fh-wedel.de> * * Licence: GPL @@ -20,7 +19,7 @@ #include <linux/mtd/mtd.h> #include <linux/buffer_head.h> -#define VERSION "$Revision: 1.23 $" +#define VERSION "$Revision: 1.28 $" #define ERROR(fmt, args...) printk(KERN_ERR "block2mtd: " fmt "\n" , ## args) @@ -89,7 +88,6 @@ void cache_readahead(struct address_space *mapping, int index) static struct page* page_readahead(struct address_space *mapping, int index) { filler_t *filler = (filler_t*)mapping->a_ops->readpage; - //do_page_cache_readahead(mapping, index, XXX, 64); cache_readahead(mapping, index); return read_cache_page(mapping, index, filler, NULL); } @@ -157,7 +155,7 @@ static int block2mtd_read(struct mtd_info *mtd, loff_t from, size_t len, struct block2mtd_dev *dev = mtd->priv; struct page *page; int index = from >> PAGE_SHIFT; - int offset = from & (PAGE_SHIFT-1); + int offset = from & (PAGE_SIZE-1); int cpylen; if (from > mtd->size) @@ -370,16 +368,16 @@ static int ustrtoul(const char *cp, char **endp, unsigned int base) } -static int parse_num32(u32 *num32, const char *token) +static int parse_num(size_t *num, const char *token) { char *endp; - unsigned long n; + size_t n; - n = ustrtoul(token, &endp, 0); + n = (size_t) ustrtoul(token, &endp, 0); if (*endp) return -EINVAL; - *num32 = n; + *num = n; return 0; } @@ -422,7 +420,7 @@ static int block2mtd_setup(const char *val, struct kernel_param *kp) char buf[80+12], *str=buf; /* 80 for device, 12 for erase size */ char *token[2]; char *name; - u32 erase_size = PAGE_SIZE; + size_t erase_size = PAGE_SIZE; int i, ret; if (strnlen(val, sizeof(buf)) >= sizeof(buf)) @@ -449,7 +447,7 @@ static int block2mtd_setup(const char *val, struct kernel_param *kp) return 0; if (token[1]) { - ret = parse_num32(&erase_size, token[1]); + ret = parse_num(&erase_size, token[1]); if (ret) parse_err("illegal erase size"); } diff --git a/drivers/mtd/devices/docecc.c b/drivers/mtd/devices/docecc.c index 933877ff4d8..9a087c1fb0b 100644 --- a/drivers/mtd/devices/docecc.c +++ b/drivers/mtd/devices/docecc.c @@ -40,6 +40,7 @@ #include <linux/mtd/mtd.h> #include <linux/mtd/doc2000.h> +#define DEBUG 0 /* need to undef it (from asm/termbits.h) */ #undef B0 diff --git a/drivers/mtd/devices/ms02-nv.c b/drivers/mtd/devices/ms02-nv.c index 380ff08d29e..f5026cee087 100644 --- a/drivers/mtd/devices/ms02-nv.c +++ b/drivers/mtd/devices/ms02-nv.c @@ -6,7 +6,7 @@ * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * - * $Id: ms02-nv.c,v 1.8 2005/01/05 18:05:12 dwmw2 Exp $ + * $Id: ms02-nv.c,v 1.10 2005/06/20 12:24:41 macro Exp $ */ #include <linux/init.h> @@ -99,8 +99,8 @@ static inline uint ms02nv_probe_one(ulong addr) * The firmware writes MS02NV_ID at MS02NV_MAGIC and also * a diagnostic status at MS02NV_DIAG. */ - ms02nv_diagp = (ms02nv_uint *)(KSEG1ADDR(addr + MS02NV_DIAG)); - ms02nv_magicp = (ms02nv_uint *)(KSEG1ADDR(addr + MS02NV_MAGIC)); + ms02nv_diagp = (ms02nv_uint *)(CKSEG1ADDR(addr + MS02NV_DIAG)); + ms02nv_magicp = (ms02nv_uint *)(CKSEG1ADDR(addr + MS02NV_MAGIC)); err = get_dbe(ms02nv_magic, ms02nv_magicp); if (err) return 0; @@ -233,7 +233,7 @@ static int __init ms02nv_init_one(ulong addr) goto err_out_csr_res; } - printk(KERN_INFO "mtd%d: %s at 0x%08lx, size %uMiB.\n", + printk(KERN_INFO "mtd%d: %s at 0x%08lx, size %zuMiB.\n", mtd->index, ms02nv_name, addr, size >> 20); mp->next = root_ms02nv_mtd; diff --git a/drivers/mtd/devices/mtdram.c b/drivers/mtd/devices/mtdram.c index edac4156d69..bb713fed2f3 100644 --- a/drivers/mtd/devices/mtdram.c +++ b/drivers/mtd/devices/mtdram.c @@ -1,9 +1,10 @@ /* * mtdram - a test mtd device - * $Id: mtdram.c,v 1.35 2005/01/05 18:05:12 dwmw2 Exp $ + * $Id: mtdram.c,v 1.37 2005/04/21 03:42:11 joern Exp $ * Author: Alexander Larsson <alex@cendio.se> * * Copyright (c) 1999 Alexander Larsson <alex@cendio.se> + * Copyright (c) 2005 Joern Engel <joern@wh.fh-wedel.de> * * This code is GPL * @@ -18,213 +19,140 @@ #include <linux/mtd/compatmac.h> #include <linux/mtd/mtd.h> -#ifndef CONFIG_MTDRAM_ABS_POS - #define CONFIG_MTDRAM_ABS_POS 0 -#endif - -#if CONFIG_MTDRAM_ABS_POS > 0 - #include <asm/io.h> -#endif - -#ifdef MODULE static unsigned long total_size = CONFIG_MTDRAM_TOTAL_SIZE; static unsigned long erase_size = CONFIG_MTDRAM_ERASE_SIZE; -module_param(total_size,ulong,0); -MODULE_PARM_DESC(total_size, "Total device size in KiB"); -module_param(erase_size,ulong,0); -MODULE_PARM_DESC(erase_size, "Device erase block size in KiB"); #define MTDRAM_TOTAL_SIZE (total_size * 1024) #define MTDRAM_ERASE_SIZE (erase_size * 1024) -#else -#define MTDRAM_TOTAL_SIZE (CONFIG_MTDRAM_TOTAL_SIZE * 1024) -#define MTDRAM_ERASE_SIZE (CONFIG_MTDRAM_ERASE_SIZE * 1024) -#endif +#ifdef MODULE +module_param(total_size, ulong, 0); +MODULE_PARM_DESC(total_size, "Total device size in KiB"); +module_param(erase_size, ulong, 0); +MODULE_PARM_DESC(erase_size, "Device erase block size in KiB"); +#endif // We could store these in the mtd structure, but we only support 1 device.. static struct mtd_info *mtd_info; - -static int -ram_erase(struct mtd_info *mtd, struct erase_info *instr) +static int ram_erase(struct mtd_info *mtd, struct erase_info *instr) { - DEBUG(MTD_DEBUG_LEVEL2, "ram_erase(pos:%ld, len:%ld)\n", (long)instr->addr, (long)instr->len); - if (instr->addr + instr->len > mtd->size) { - DEBUG(MTD_DEBUG_LEVEL1, "ram_erase() out of bounds (%ld > %ld)\n", (long)(instr->addr + instr->len), (long)mtd->size); - return -EINVAL; - } - - memset((char *)mtd->priv + instr->addr, 0xff, instr->len); - - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); - - return 0; + if (instr->addr + instr->len > mtd->size) + return -EINVAL; + + memset((char *)mtd->priv + instr->addr, 0xff, instr->len); + + instr->state = MTD_ERASE_DONE; + mtd_erase_callback(instr); + + return 0; } -static int ram_point (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char **mtdbuf) +static int ram_point(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char **mtdbuf) { - if (from + len > mtd->size) - return -EINVAL; - - *mtdbuf = mtd->priv + from; - *retlen = len; - return 0; + if (from + len > mtd->size) + return -EINVAL; + + *mtdbuf = mtd->priv + from; + *retlen = len; + return 0; } -static void ram_unpoint (struct mtd_info *mtd, u_char *addr, loff_t from, - size_t len) +static void ram_unpoint(struct mtd_info *mtd, u_char * addr, loff_t from, + size_t len) { - DEBUG(MTD_DEBUG_LEVEL2, "ram_unpoint\n"); } static int ram_read(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf) + size_t *retlen, u_char *buf) { - DEBUG(MTD_DEBUG_LEVEL2, "ram_read(pos:%ld, len:%ld)\n", (long)from, (long)len); - if (from + len > mtd->size) { - DEBUG(MTD_DEBUG_LEVEL1, "ram_read() out of bounds (%ld > %ld)\n", (long)(from + len), (long)mtd->size); - return -EINVAL; - } + if (from + len > mtd->size) + return -EINVAL; - memcpy(buf, mtd->priv + from, len); + memcpy(buf, mtd->priv + from, len); - *retlen=len; - return 0; + *retlen = len; + return 0; } static int ram_write(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf) + size_t *retlen, const u_char *buf) { - DEBUG(MTD_DEBUG_LEVEL2, "ram_write(pos:%ld, len:%ld)\n", (long)to, (long)len); - if (to + len > mtd->size) { - DEBUG(MTD_DEBUG_LEVEL1, "ram_write() out of bounds (%ld > %ld)\n", (long)(to + len), (long)mtd->size); - return -EINVAL; - } + if (to + len > mtd->size) + return -EINVAL; - memcpy ((char *)mtd->priv + to, buf, len); + memcpy((char *)mtd->priv + to, buf, len); - *retlen=len; - return 0; + *retlen = len; + return 0; } static void __exit cleanup_mtdram(void) { - if (mtd_info) { - del_mtd_device(mtd_info); -#if CONFIG_MTDRAM_TOTAL_SIZE > 0 - if (mtd_info->priv) -#if CONFIG_MTDRAM_ABS_POS > 0 - iounmap(mtd_info->priv); -#else - vfree(mtd_info->priv); -#endif -#endif - kfree(mtd_info); - } -} - -int mtdram_init_device(struct mtd_info *mtd, void *mapped_address, - unsigned long size, char *name) -{ - memset(mtd, 0, sizeof(*mtd)); - - /* Setup the MTD structure */ - mtd->name = name; - mtd->type = MTD_RAM; - mtd->flags = MTD_CAP_RAM; - mtd->size = size; - mtd->erasesize = MTDRAM_ERASE_SIZE; - mtd->priv = mapped_address; - - mtd->owner = THIS_MODULE; - mtd->erase = ram_erase; - mtd->point = ram_point; - mtd->unpoint = ram_unpoint; - mtd->read = ram_read; - mtd->write = ram_write; - - if (add_mtd_device(mtd)) { - return -EIO; - } - - return 0; -} - -#if CONFIG_MTDRAM_TOTAL_SIZE > 0 -#if CONFIG_MTDRAM_ABS_POS > 0 -static int __init init_mtdram(void) -{ - void *addr; - int err; - /* Allocate some memory */ - mtd_info = kmalloc(sizeof(struct mtd_info), GFP_KERNEL); - if (!mtd_info) - return -ENOMEM; - - addr = ioremap(CONFIG_MTDRAM_ABS_POS, MTDRAM_TOTAL_SIZE); - if (!addr) { - DEBUG(MTD_DEBUG_LEVEL1, - "Failed to ioremap) memory region of size %ld at ABS_POS:%ld\n", - (long)MTDRAM_TOTAL_SIZE, (long)CONFIG_MTDRAM_ABS_POS); - kfree(mtd_info); - mtd_info = NULL; - return -ENOMEM; - } - err = mtdram_init_device(mtd_info, addr, - MTDRAM_TOTAL_SIZE, "mtdram test device"); - if (err) - { - iounmap(addr); - kfree(mtd_info); - mtd_info = NULL; - return err; - } - memset(mtd_info->priv, 0xff, MTDRAM_TOTAL_SIZE); - return err; + if (mtd_info) { + del_mtd_device(mtd_info); + if (mtd_info->priv) + vfree(mtd_info->priv); + kfree(mtd_info); + } } -#else /* CONFIG_MTDRAM_ABS_POS > 0 */ - -static int __init init_mtdram(void) +int mtdram_init_device(struct mtd_info *mtd, void *mapped_address, + unsigned long size, char *name) { - void *addr; - int err; - /* Allocate some memory */ - mtd_info = kmalloc(sizeof(struct mtd_info), GFP_KERNEL); - if (!mtd_info) - return -ENOMEM; - - addr = vmalloc(MTDRAM_TOTAL_SIZE); - if (!addr) { - DEBUG(MTD_DEBUG_LEVEL1, - "Failed to vmalloc memory region of size %ld\n", - (long)MTDRAM_TOTAL_SIZE); - kfree(mtd_info); - mtd_info = NULL; - return -ENOMEM; - } - err = mtdram_init_device(mtd_info, addr, - MTDRAM_TOTAL_SIZE, "mtdram test device"); - if (err) - { - vfree(addr); - kfree(mtd_info); - mtd_info = NULL; - return err; - } - memset(mtd_info->priv, 0xff, MTDRAM_TOTAL_SIZE); - return err; + memset(mtd, 0, sizeof(*mtd)); + + /* Setup the MTD structure */ + mtd->name = name; + mtd->type = MTD_RAM; + mtd->flags = MTD_CAP_RAM; + mtd->size = size; + mtd->erasesize = MTDRAM_ERASE_SIZE; + mtd->priv = mapped_address; + + mtd->owner = THIS_MODULE; + mtd->erase = ram_erase; + mtd->point = ram_point; + mtd->unpoint = ram_unpoint; + mtd->read = ram_read; + mtd->write = ram_write; + + if (add_mtd_device(mtd)) { + return -EIO; + } + + return 0; } -#endif /* !(CONFIG_MTDRAM_ABS_POS > 0) */ - -#else /* CONFIG_MTDRAM_TOTAL_SIZE > 0 */ static int __init init_mtdram(void) { - return 0; + void *addr; + int err; + + if (!total_size) + return -EINVAL; + + /* Allocate some memory */ + mtd_info = kmalloc(sizeof(struct mtd_info), GFP_KERNEL); + if (!mtd_info) + return -ENOMEM; + + addr = vmalloc(MTDRAM_TOTAL_SIZE); + if (!addr) { + kfree(mtd_info); + mtd_info = NULL; + return -ENOMEM; + } + err = mtdram_init_device(mtd_info, addr, MTDRAM_TOTAL_SIZE, "mtdram test device"); + if (err) { + vfree(addr); + kfree(mtd_info); + mtd_info = NULL; + return err; + } + memset(mtd_info->priv, 0xff, MTDRAM_TOTAL_SIZE); + return err; } -#endif /* !(CONFIG_MTDRAM_TOTAL_SIZE > 0) */ module_init(init_mtdram); module_exit(cleanup_mtdram); @@ -232,4 +160,3 @@ module_exit(cleanup_mtdram); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Alexander Larsson <alexl@redhat.com>"); MODULE_DESCRIPTION("Simulated MTD driver for testing"); - diff --git a/drivers/mtd/devices/phram.c b/drivers/mtd/devices/phram.c index 5f8e164ddb7..a423a382095 100644 --- a/drivers/mtd/devices/phram.c +++ b/drivers/mtd/devices/phram.c @@ -1,5 +1,5 @@ /** - * $Id: phram.c,v 1.11 2005/01/05 18:05:13 dwmw2 Exp $ + * $Id: phram.c,v 1.14 2005/03/07 21:43:38 joern Exp $ * * Copyright (c) ???? Jochen Schäuble <psionic@psionic.de> * Copyright (c) 2003-2004 Jörn Engel <joern@wh.fh-wedel.de> @@ -15,9 +15,7 @@ * * Example: * phram=swap,64Mi,128Mi phram=test,900Mi,1Mi - * */ - #include <asm/io.h> #include <linux/init.h> #include <linux/kernel.h> @@ -36,7 +34,6 @@ struct phram_mtd_list { static LIST_HEAD(phram_list); - static int phram_erase(struct mtd_info *mtd, struct erase_info *instr) { u_char *start = mtd->priv; @@ -71,7 +68,8 @@ static int phram_point(struct mtd_info *mtd, loff_t from, size_t len, return 0; } -static void phram_unpoint(struct mtd_info *mtd, u_char *addr, loff_t from, size_t len) +static void phram_unpoint(struct mtd_info *mtd, u_char *addr, loff_t from, + size_t len) { } @@ -80,8 +78,11 @@ static int phram_read(struct mtd_info *mtd, loff_t from, size_t len, { u_char *start = mtd->priv; - if (from + len > mtd->size) + if (from >= mtd->size) return -EINVAL; + + if (len > mtd->size - from) + len = mtd->size - from; memcpy(buf, start + from, len); @@ -94,8 +95,11 @@ static int phram_write(struct mtd_info *mtd, loff_t to, size_t len, { u_char *start = mtd->priv; - if (to + len > mtd->size) + if (to >= mtd->size) return -EINVAL; + + if (len > mtd->size - to) + len = mtd->size - to; memcpy(start + to, buf, len); @@ -107,9 +111,9 @@ static int phram_write(struct mtd_info *mtd, loff_t to, size_t len, static void unregister_devices(void) { - struct phram_mtd_list *this; + struct phram_mtd_list *this, *safe; - list_for_each_entry(this, &phram_list, list) { + list_for_each_entry_safe(this, safe, &phram_list, list) { del_mtd_device(&this->mtd); iounmap(this->mtd.priv); kfree(this); @@ -145,7 +149,7 @@ static int register_device(char *name, unsigned long start, unsigned long len) new->mtd.write = phram_write; new->mtd.owner = THIS_MODULE; new->mtd.type = MTD_RAM; - new->mtd.erasesize = 0; + new->mtd.erasesize = PAGE_SIZE; ret = -EAGAIN; if (add_mtd_device(&new->mtd)) { @@ -214,6 +218,15 @@ static int parse_name(char **pname, const char *token) return 0; } + +static inline void kill_final_newline(char *str) +{ + char *newline = strrchr(str, '\n'); + if (newline && !newline[1]) + *newline = 0; +} + + #define parse_err(fmt, args...) do { \ ERROR(fmt , ## args); \ return 0; \ @@ -232,6 +245,7 @@ static int phram_setup(const char *val, struct kernel_param *kp) parse_err("parameter too long\n"); strcpy(str, val); + kill_final_newline(str); for (i=0; i<3; i++) token[i] = strsep(&str, ","); diff --git a/drivers/mtd/devices/slram.c b/drivers/mtd/devices/slram.c index 5ab15e643be..84fa91392a8 100644 --- a/drivers/mtd/devices/slram.c +++ b/drivers/mtd/devices/slram.c @@ -1,6 +1,6 @@ /*====================================================================== - $Id: slram.c,v 1.33 2005/01/05 18:05:13 dwmw2 Exp $ + $Id: slram.c,v 1.34 2005/01/06 21:16:42 jwboyer Exp $ This driver provides a method to access memory not used by the kernel itself (i.e. if the kernel commandline mem=xxx is used). To actually @@ -50,6 +50,7 @@ #include <linux/mtd/mtd.h> #define SLRAM_MAX_DEVICES_PARAMS 6 /* 3 parameters / device */ +#define SLRAM_BLK_SZ 0x4000 #define T(fmt, args...) printk(KERN_DEBUG fmt, ## args) #define E(fmt, args...) printk(KERN_NOTICE fmt, ## args) @@ -108,6 +109,9 @@ static int slram_point(struct mtd_info *mtd, loff_t from, size_t len, { slram_priv_t *priv = mtd->priv; + if (from + len > mtd->size) + return -EINVAL; + *mtdbuf = priv->start + from; *retlen = len; return(0); @@ -121,7 +125,13 @@ static int slram_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { slram_priv_t *priv = mtd->priv; - + + if (from > mtd->size) + return -EINVAL; + + if (from + len > mtd->size) + len = mtd->size - from; + memcpy(buf, priv->start + from, len); *retlen = len; @@ -133,6 +143,9 @@ static int slram_write(struct mtd_info *mtd, loff_t to, size_t len, { slram_priv_t *priv = mtd->priv; + if (to + len > mtd->size) + return -EINVAL; + memcpy(priv->start + to, buf, len); *retlen = len; @@ -188,7 +201,7 @@ static int register_device(char *name, unsigned long start, unsigned long length (*curmtd)->mtdinfo->name = name; (*curmtd)->mtdinfo->size = length; (*curmtd)->mtdinfo->flags = MTD_CLEAR_BITS | MTD_SET_BITS | - MTD_WRITEB_WRITEABLE | MTD_VOLATILE; + MTD_WRITEB_WRITEABLE | MTD_VOLATILE | MTD_CAP_RAM; (*curmtd)->mtdinfo->erase = slram_erase; (*curmtd)->mtdinfo->point = slram_point; (*curmtd)->mtdinfo->unpoint = slram_unpoint; @@ -196,7 +209,7 @@ static int register_device(char *name, unsigned long start, unsigned long length (*curmtd)->mtdinfo->write = slram_write; (*curmtd)->mtdinfo->owner = THIS_MODULE; (*curmtd)->mtdinfo->type = MTD_RAM; - (*curmtd)->mtdinfo->erasesize = 0x0; + (*curmtd)->mtdinfo->erasesize = SLRAM_BLK_SZ; if (add_mtd_device((*curmtd)->mtdinfo)) { E("slram: Failed to register new device\n"); @@ -261,7 +274,7 @@ static int parse_cmdline(char *devname, char *szstart, char *szlength) } T("slram: devname=%s, devstart=0x%lx, devlength=0x%lx\n", devname, devstart, devlength); - if ((devstart < 0) || (devlength < 0)) { + if ((devstart < 0) || (devlength < 0) || (devlength % SLRAM_BLK_SZ != 0)) { E("slram: Illegal start / length parameter.\n"); return(-EINVAL); } |